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J. H. REYNOLDS.

.VBNTILATOR.

Patented May 29,1888

No. 383,592. v

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ATENT VENTI LATO R.

SPECIFICATION forming part of Letters Patent No. 383,592, dated May 29, 1 888.

Application filed March 3, 1888.

.To (LZZ whom it may concern:

Be it known that I, JOHN H. REYNOLDS, of Troy, in the county of Rensselaer and State of New York, have invented new anduseful Improvements in Ventilators, of which the fol lowing is a specification.

This invention relates to improvements on the ventilator for which Letters 'Patent of the United States, No. 174,304, were granted to Andrew .L Robinson on the 29th day of February, 1876; and the object of my invention is to remedy certain defects in the operation of that construction, which is particularly no ticeable when those ventilators are applied to use on railway-cars, it being found that when used for that purpose, and with the cars moving at a high rate of speed, dust and smoke are liable to pass through said ventilators and into the car, to the discomfort of persons in said car.

In the accompanying drawings, which are herein referred to and form part of this specification, Figure 1 is a side elevation of my ventilator. Fig. 2 is a vertical section of my ventilator at the line X X on Fig. 3. Fig. 3 is a plan view of Fig. l, and Fig. 4 is a 1101i zontal section at the line Y Y on Fig; 2.

As represented in the drawings, A designates the upper member of the cap ofniy ventilator, which is madein adon'ie-likeform, with its lower edge turned, by a reversal of the curve, to form an annular gutter, B, whereby water and dust which fall upon the dome will be caught and retained from passing into the opening of the cap.

0 is the lower member of the cap, which is made substantially in the same form as the upper lllQlllllQLbUl] with the central part of the dome cut out for the reception of the pipe D, which projects through the upper face of said lower member to form a standing rim, d, which forms a barrier to obstruct the passage of dust into the pipe D and to deflect the dust away from said pipe. The upper memher, A, is fixed directly above the lower meinher, 0, so that the two will be substantially parallel with each other, and so that a circumferential opening, E, will be left between them.

F is a belt or band which is fixed concentrically around the cap of the ventilator and Serial No. 266,026. (1%" model.)

trude through the opening E, and to theirprotrading ends the belt F is secured in position opposite to the opening E, so as to form an annular opening between said belt and the outer edges of the upper and lower members of the cap, as shown in the drawings.

The pipe D is extended upward through the dome of the lower member, 0, and preferably the upper end of said pipe is provided with a flaring flange or bell-mouth, cl, whose upper end will extend above the level of the lower side of the gutter B of the upper member, A, and thereby I am enabled to exclude all dust, rain, snow, and smoke from passing into the pipe D, said bell-mouth serving as a deflector for throwing such particles downward toward the dome of the lower member, from which they will be removed by the transverse aircurrents which pass through the opening E. \Yhen preferred, the bell-mouth d may be omitted, so that the upper end of the pipe D will form a cylindrical standing rim, whose upper end should be carried upward to the position above described for said bellmout-h.

I claim as my invention-- In a ventilator-cap, the combination of two dome-like mcmbers-havingsubstantiallythe same l'ormfixed one abovethe other to produce a circumferential opening between them,

and the convex faces of both members bein fixed uppermost, a ventilator pipe which passes centrally through the lower dome to form a cylindrical standing rim whose upper end is above the level of the under side of the gutter of the upper member, and a belt which concentrically surrounds said cap opposite to said circumferential opening, as and for the purpose herein specified.

JOHN H. REYNOLDS. \Vitnesses:

WM. H. Low, S. B. BREWER. 

